Facies characterization of carbonates through the use of porosity log crossplots, Pearsall Formation (lower Cretaceous), South Texas PDF Download
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Author: Christopher Mulholland Rendeiro
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 218
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Author: Christopher Mulholland Rendeiro
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 218
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Author: William Howard Michael Basham
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 160
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Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461573882
Category : Science
Languages : en
Pages : 414
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Book Description
Masters Theses in the Pure and Applied Sciences was first conceived, published, SIld disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna and broader dissemination. tional publishing house to assure improved service Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 30 (thesis year 1985) a total of 12,400 theses titles from 26 Canadian and 186 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work.
Author: R. G. Loucks
Publisher:
ISBN:
Category : Diagenesis
Languages : en
Pages : 724
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Author: James Henry Dupree
Publisher:
ISBN:
Category : Facies (Geology)
Languages : en
Pages : 230
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Author: Carol Jean Eckelmann
Publisher:
ISBN:
Category : Facies (Geology)
Languages : en
Pages : 154
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Author: Amanda R. Masterson
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 546
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Author: Ryan Lee Harbor
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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The Eagle Ford is a well-known source rock for both sandstone (Woodbine) and carbonate (Austin and Buda) hydrocarbon reservoirs in East and South Texas. Recent discoveries have demonstrated that source rocks, such as the Eagle Ford, are capable of producing significant volumes of gas and oil. At the same time, variations in well producibility indicate that these rocks, like conventional reservoirs, display considerable geological heterogeneity. Yet, only limited research has been published on the subsurface stratigraphy and character of Eagle Ford facies. Understanding the types, controls, and distribution of these heterogeneities requires in-depth rock-based studies. In order to characterize Eagle Ford facies, 27 cores from 13 counties were investigated for rock textures, fabrics, sedimentary structures, and fossil assemblages. These studies were supported by light and electron microscopy as well as analysis of elemental chemistry and mineralogy. Regional subsurface stratigraphic correlations and facies distributions were defined using wireline logs calibrated from core studies. In South Texas, the Eagle Ford Formation was deposited during a second-order transgressive/regressive cycle on the flooded, oxygen-restricted Comanche Shelf. Nine depositional facies consisting predominately of organic-rich, fine-grained (5.0 % TOC) to coarser-grained (3.05 % TOC) fabrics were identified. Facies developed in low-energy environments episodically interrupted by higher-energy, event sedimentation (current winnowing, cohesive and non-cohesive density flows, and turbidity flows). Locally, these rocks show evidence of early diagenetic recrystallization of calcite. Concurrent water anoxia and organic matter preservation persisted locally into later Austin deposition, resulting in formation of a three-fold division of the Cenomanian-Coniacian Eagle Ford Formation. Common facies of lower and upper Eagle Ford members include (1) unlaminated, fissile, clay- and silica-rich, organic-rich mudrocks, (2) laminated, calcareous, organic-rich mudrocks, and (3) laminated, foraminifera- and peloid-rich, organic-rich packstones. The transitional Eagle Ford member consists of highly-cyclic (1) ripple-laminated, organic-rich wackestone (cycle base) and (2) burrowed, organic-lean lime wackestones (cycle top). Transitional Eagle Ford facies developed in oxygen-restricted, basinal depositional environments as distal equivalents to burrowed, foraminiferal lime wackestones of the Austin Formation. Facies complexities in the Eagle Ford stem from complicated and interrelated processes of sediment production and distribution, diagenesis, and water column chemistry. Integrated core studies shed light on both controls of facies formation and their spatial distribution. These findings provide a framework for upscaling the fine-scale, heterogeneous character of shelfal Eagle Ford mudrocks; thus allowing development of predictive models into the distribution of key reservoir properties in the subsurface.
Author: J.L. Wilson
Publisher: Springer Science & Business Media
ISBN: 1461263832
Category : Science
Languages : en
Pages : 484
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Since 1950 geologists have learned more about the origin and lithification of carbonate sediments than in all the previous years of the history of science. This is true in all the diverse fields of carbonate geology: the study of Recent environments, marine zoology and botany, organic geochemistry, trace element and isotope geochemistry, mineralogy, microfacies of depositional environments, and trace-fossil and sedimentary structure investigation. A synthesis of this new knowledge is just beginning to be formulated. The purpose of this volume is to introduce the advanced student and petroleum explorationist principally to one important aspect of this study: to some of the principles of carbonate geology which may serve to interpret the depositional environments of ancient strata and to better define their sequences and patterns. Chapter I is a brief review of principles of carbonate sedimentation. (For a full discussion of the mineralogy, geochemistry, and diagenesis of carbonates along with a review of Holocene sediments, one may refer to Bathurst's (1971) and Milliman's (1974) texts.) Chapter II reviews stratigraphic and paleotectonic concepts and discusses a general model for carbonate deposition. Chapter III offers an outline of carbonate petrography, concentrating on lithologic descrip tion for the purposes of environmental interpretation. For a further review of this subject and excellent photomicrographs, Horowitz and Potter (1971) and Majewske (1969) may be used.
Author: Brenda Lee Kirkland
Publisher:
ISBN:
Category : Carbonate rocks
Languages : en
Pages : 252
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Book Description
